The Turing Test - They left me behind

A scene happening near the end of the EDA The Turing Test (by Paul Leonard), after the Singing Ones left Earth without Eight. I really needed to get that one out of my system because it destroyed me.

The scene as it is told in the novel:

At last we were back at the church. The windows were gone, and the smell inside was even more appalling than that outside, but it was possible to get into the crypt, and through the trapdoor at the bottom of the crypt into the strangers’ light-and-music chamber.

We assembled, the Doctor, Turing, Greene, and I, and then we noticed the strangers were gone. There had been no light, no music, no heavenly surge of power or the screaming of engines. They were, clearly and simply, gone. And the Doctor was, clearly and simply, still there.

He crumpled slowly, like a flower without water. ‘They left me behind,’ he muttered.

I knew then that this had been the Doctor’s sole motive all along. He had wanted to get away: I’d known it from the beginning. As I’ve said, all I hadn’t realized was just how far he’d wanted to go.

‘They left me behind!’ shrieked the Doctor. (…)

He was looking around like a man who realizes that the prison cell is still there, that he was only dreaming of green fields and yellow, buttery sunsets.

‘What am I going to do?’ he asked, still curled up like a defeated child, apparently addressing his boots.

‘Never mind,’ said Turing. ‘Things will get better here.’

Greene snorted. Turing looked daggers at him, and put his arm around his beloved. ‘The machines I’m building will think like people. Now I know that it can be done nothing will stop me. In fifty years’ time – a hundred – by then they’ll work alongside humans – with them. It might even be possible to integrate computers with the mind itself! And they’ll talk to each other by radio – anyone speaking to anyone, anywhere – just imagine it! And all the information – we’ll break all the codes, all the barriers and we’ll know everything – there won’t be any more hatred or misunderstanding or war.’

It must have been a wonderful moment for him, as he unwrapped his promises like a list of Christmas presents for a kid. Then the Doctor spoiled it. He uncurled himself and looked up.

‘No you won’t,’ he said, his voice a hollow whisper.